Four Events of Host Switching in Aspidoderidae (Nematoda) Involve Convergent Lineages of Mammals
Four Events of Host Switching in Aspidoderidae (Nematoda) Involve Convergent Lineages of Mammals
复制标题
蜘蛛科（线虫）宿主转换的四个事件涉及哺乳动物的趋同谱系
DOI：
10.1645/ge-3045.1
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发表时间：
2012
影响因子：
1.9
通讯作者：
Graciela Teresa
中科院分区：
文献类型：
--
作者：
F. Agustin;Jimenez Ruiz;S. Gardner;G. Navone;S. Gardner;Navone Lyell;Graciela Teresa
摘要：大美洲交流导致了不同起源和进化轨迹的动物群的混合，这些动物群在北美和南美经历了迅速的多样化。结果，最近到达的动物群体聚集在一起，形成了类似的习性，并与一些地方性动物形成了生态公会。我们提出了一个重建的进化事件，在Aspidoderidae，一个家庭的线虫感染哺乳动物的一部分，这种交换，即，类、负鼠类、乙齿类、土鼠类和猪形啮齿类。通过处理主机的离散状态的字符和使用简约和贝叶斯推理，以优化这些特征到Aspidoderidae的发育，我们重建Dasypodidae（犰狳）作为突触的家庭主机。此外，还检测到4起主机切换事件。一种是由原足类动物转变为豪猪形啮齿类动物，然后转变为土鼠类动物。剩下的一组事件包括从dasypodies切换到didelphid有袋动物，然后到sigmodontine啮齿动物。祖先分布的重建表明，3个事件的扩散到新北。其中两次入侵表明，2种不同谱系的水蚤寄生虫在不同时间进入北方半球，这与墨西哥存在2种谱系的犰狳相一致。
Abstract: The Great American Interchange resulted in the mixing of faunistic groups with different origins and evolutionary trajectories that underwent rapid diversification in North and South America. As a result, groups of animals of recent arrival converged into similar habits and formed ecological guilds with some of the endemics. We present a reconstruction of the evolutionary events in Aspidoderidae, a family of nematodes that infect mammals that are part of this interchange, i.e., dasypodids, opossums, and sigmodontine, geomyid, and hystricognath rodents. By treating hosts as discrete states of character and using parsimony and Bayesian inferences to optimize these traits into the phylogeny of Aspidoderidae, we reconstructed Dasypodidae (armadillos) as the synapomorphic host for the family. In addition, 4 events of host switching were detected. One consisted of the switch from dasypodids to hystricognath rodents, and subsequently to geomyid rodents. The remaining set of events consisted of a switch from dasypodids to didelphid marsupials and then to sigmodontine rodents. The reconstruction of the ancestral distribution suggests 3 events of dispersal into the Nearctic. Two of these invasions would suggest that 2 different lineages of dasypodid parasites entered the Northern Hemisphere at different times, which is consistent with the presence of 2 lineages of armadillos in Mexico.
影响因子：
56.9
作者：
Huelsenbeck, JP;Rannala, B
通讯作者：
Rannala, B